A Practical Approach, Second Edition=Ronald D. Ho.pdf

Optic nervefibers presentDifferentiationof corneaAnteriorchamberdifferentiatingCiliary bodydifferentiation;primordium ofchoroideascleraEar14 9.5 2,10 13 10 15 10 11 10 21.5 10 39 10 46–48 14.6–15.613 60 15–15.2510,84,149,15160 36–42 60 48–51 16–18 60,84,149,1514d 1015 12 2 14 9 40–44 9 53–54 22–24 60 6d 8856–70 26–45 84,149,151Otic placodes 10 2 2 8.54 23± 39 27 14 39Otic cups 10.5 2.4 2,11 23± 39Otic vesicleformingOtocyst(closure)Otic vesicleswith shortendolymphaticductEndolymphaticsac appearspinched offfrom oticvesicleThickened,hollowepithelialprimodia ofsemicircularcanalsCochlear andvestibularregionsSeparation ofutricular andsaccularregionsCochleaappearing11.5 10 8.5–8.7511–11.53.3–3.813 10,39 9 10 8.5 10 15.5 13 10,56 25 10 21–29 2–6 10,73,1468d 882.3d 102,11 24± 39 9 44 29 33 30 4 17 39,146 11d 12 8811.75 4.2 2 10.5 76 29–32 5–7 29± 73,7612–13 11,27 11 77 30 33 33–37 6.5 77,146,15512–13 6.2 2,27 11–11.511.5 77 38–44 8–13 35± 77,155,15660 30–34 60 35–42 7–9 6012.5 6.2 2 14.5 150 33 150 6–7d 8813.5 10 12 10 13 10 10 10 20.5 10 37 10 44 10 7d 10COMPARATIVE FEATURES OF VERTEBRATE EMBRYOLOGY 179© 2006 by Taylor & Francis Group, LLC